Improved nail-plate feeder



UNITED STATES PATENT OFFICE.

C. D. HUNT, OF FAIRHAVEN, ASSIGNOR TO THE AMERICAN NAIL MACHINE COMPANY,OF BOSTON, MASSACHUSETTS.

IMPROVED NAIL-PLATE FEEDER.

Specification forming part of Letters Patent No. 53,924, dated April 10,1866.

To all whom it may concern.-

Be it known that I, CYRUs D. HUNT, of Fairhaven, ofthe county of Bristoland State of Massachusetts, have invented a new and useful Improvementin Nail-Machines or in the Feeding Mechanism Therefor; and I do herebydeclare the same to be fully described in the following specificationand represented in the accompanying drawings, of which- Figure l is atop View, Fig. 2 a side elevation, and Fig. 3 a longitudinal section, ofmy improved cutnail-machine feeder. Fig. 4 is a view of the lever,pawls, and their springs, to be hereinafter described.

In the drawings, A denotes a vibratory arm orframe, which is mounted ona slide-plate, B, and turns horizontally on a pin or screw, a, whichconnects the two. A cam, c, fixed on a shaft, E, and operating in afork, D, projecting down from the plate B, serves to impart to the saidplate a reciprocating horizontal motion on the top of t-he frame ortable F. A side view of this cam and fork is shown in Fig. 5.

The two parts b b of the frame A embrace, near their outer ends, a-projection, c', extending up from a stationary arm, d, the same beingto cause the frame A to have a vibratory motion when moved with theplate B.

A bent lever, G, having its fulcrum Z sustained by the frame A, isarrangcdwithin and extends below and above such frame, and is formed inmanner as shown in the drawings. The foot e of this lever rests on acam, H, fixed on the shaft E, and formed as shown in Fig. 6.

On a cross-head, f, making part of the lever Gr, and situated at theupper end thereof, are two pawls, I I, which are forced toward eachother and against a double rack-bar, 7c, by means of sprin gs g g,projecting from the upper arm of the lever. The said double rack-bar 7creceives the nail-plate L, or has it fastened to its larger end or headh, the said nail-plate being projected from the bar in manner as eX-hibited in the drawings.

While the cam H serves to move the lever G in one direction, a spring,M, arranged as represented in Figs. 2 and 3, answers to move it in theopposite direction.

The rod or double rack-bar carryingthe nailplate should be heavy enoughto retain its position on the projector c and in the fork of a rest orstandard, N, during the rearward movement of the pawls I I and the upperarm of the lever supporting them.

In the operation of this feeding apparatus the cam answers the purposeof simply moving the lever in order to cause the reversion ot' the pawlson the double rack-bar, the spring M effecting the feeding of thenail-plate forward as fast as may be required. The end of the nail-platebrings up against a gage of the machine, against which it is forced hythe said spring'. Thus, while each movement of the lever, in order toretract the pawls, carries them back to one determined position, theforward movement of thelever, by bei ng produced by the spring, will becertain to force the nailplate up to the gage and hold it there, howeverthe nails cut from the plate may varyin width relatively to each other.The said feedingap paratus is found to be very certain in its operationsgenerally, and to cause the nails made to be of a uniform size.

I claim- The combination and arrangement of the double rack-har 7c, thepawls I I, the lever G, the spring M,and the earn H as applied to thevibratory arm A, and the shaft E, substantially as specified.

CYRUS I). HUNT.

Witnesses R. H. EDDY, F. P. HALE, Jr.

